"Descriptions: - ABS material, heat and corrosion resistance, and has anti-flame retardant properties, high safety factor. - Dual USB interface can also charge two mobile phones or tablet PCs. - Waterproof switch, turn off the power when not use, convenient and safe. - Short-circuit protection and over-load protection technology. - Super waterproof cover (when not used, please cover the waterproof, dust). - You can install this dual USB charger socket in your motorcycle handlebar. - With voltmeter to check the voltage of the accumulator, much safer. - color:Blue